Dry dog food



FIG. 1 is a front perspective of a dry dog food showing our new design;

FIG. 2 is a front elevational view thereof, the undisclosed rear being a mirror image;

FIG. 3 is a side elevational view thereof, the undisclosed side being a mirror image; and,

FIG. 4 is a top plan view thereof, the undisclosed bottom being a mirror image. 

The ornamental design for a dry dog food, as shown and described. 